<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="是否删除" prop="isDeleted">
        <el-input
          v-model="queryParams.isDeleted"
          placeholder="请输入是否删除"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['edu:template:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['edu:template:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['edu:template:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['edu:template:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="templateList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="模板类型" align="center" prop="templateType" >
        <template slot-scope="scope">
          <dict-tag :options="dict.type.message_template_type" :value="scope.row.templateType"/>
        </template>
      </el-table-column>
      <el-table-column label="模板内容" align="center" prop="templateContent" >
        <template slot-scope="scope">
          <span v-html="scope.row.templateContent"></span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['edu:template:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['edu:template:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改学生寄语模板对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="1000px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="模板类型" prop="templateType">
          <el-select v-model="form.templateType" placeholder="请选择模板类型" style="width: 100%">
            <el-option v-for="dict in dict.type.message_template_type" :key="dict.value" :label="dict.label" :value="dict.value"></el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="模板内容" prop="name">
          <!-- 左侧可拖拽字段面板 -->
          <div class="drag-panel">
            <span v-for="field in fields" :key="field.key" class="drag-item" draggable="true" @dragstart="handleDragStart($event, field)">
             <el-tag>{{ field.label }}</el-tag>
            </span>
          </div>
          <!-- 富文本编辑器 -->
          <div class="editor-container" @dragover="handleDragOver" @drop="handleDrop">
            <quill-editor
              ref="editor"
              v-model="form.templateContent"
              :options="editorOptions"
            />
          </div>
        </el-form-item>

      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listTemplate, getTemplate, delTemplate, addTemplate, updateTemplate } from "@/api/edu/template";
import { quillEditor } from 'vue-quill-editor'
import 'quill/dist/quill.snow.css'

export default {
  name: "Template",
  components: { quillEditor },
  dicts: ["message_template_type"],
  data() {

    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 学生寄语模板表格数据
      templateList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        templateType: null,
        templateContent: null,
        isDeleted: null
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
      },
      draggedField: null, // 当前拖拽的字段
      fields: [ // 预设字段
        { key: 'name', label: '同学姓名', placeholder: '{{同学姓名}}' },
      ],
      editorOptions: {
        modules: {
          toolbar: [
            ['bold', 'italic', 'underline'],
            [{ 'list': 'ordered'}, { 'list': 'bullet' }],
            ['link', 'image']
          ]
        }
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询学生寄语模板列表 */
    getList() {
      this.loading = true;
      listTemplate(this.queryParams).then(response => {
        this.templateList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        templateType: null,
        templateContent: null,
        createBy: null,
        createTime: null,
        updateBy: null,
        updateTime: null,
        isDeleted: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.id)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加学生寄语模板";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const id = row.id || this.ids
      getTemplate(id).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改学生寄语模板";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id != null) {
            updateTemplate(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addTemplate(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const ids = row.id || this.ids;
      this.$modal.confirm('是否确认删除学生寄语模板编号为"' + ids + '"的数据项？').then(function() {
        return delTemplate(ids);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('edu/template/export', {
        ...this.queryParams
      }, `template_${new Date().getTime()}.xlsx`)
    },
    // 开始拖拽
    handleDragStart(e, field) {
      this.draggedField = field
      e.dataTransfer.setData('text/plain', field.placeholder)
    },

    // 允许放置
    handleDragOver(e) {
      e.preventDefault()
    },

    // 放置处理
    handleDrop(e) {
      e.preventDefault()
      if (!this.draggedField) return

      const editor = this.$refs.editor.quill
      // 获取鼠标位置
      const range = editor.getSelection(true)

      // 插入占位符（保留选区）
      editor.insertText(range.index, this.draggedField.placeholder)

      // 移动光标到插入内容后
      editor.setSelection(range.index + this.draggedField.placeholder.length)
      console.log(this.form.templateContent,"模板内容")
    }
  }
};
</script>
